Refraction through a Lens — Physics STD 10 — Question

The temperature required for the process of nuclear fusion is nearly:

When the nucleus of a radioactive element, such as uranium is hit by a slow moving neutron, such that it splits into two almost equal nuclei with the release of more neutrons and energy, then the process is called :

The power of electromagnet can be increased:

An object is placed at a distance of more than 40 cm from a convex lens of focal length 20 cm . The image formed is real, inverted and ______________ .

An endoscope uses optical fiber to transmit high resolution images of internal organs without loss of information. The phenomenon of light that governs the functioning of the optical fiber is:

An electric appliance has a rating of 1000 W-200 V. The resistance of the element of electric appliance is:

Which is not the property of magnetic lines of force around a straight conductor carrying current?

A ray of light after refraction through a lens emerges parallel to the principal axis of the lens. The incident ray either passes through : ________ .

Assertion (A): In the uniform circular motion, the body is acted upon by a centripetal force, normal to displacement.
Reason (A): In the uniform circular motion, work done by the body is zero.

Consider the following figure:

(i) Which of the following will happen if the magnet is brought closer to the solenoid?